The Freedom Tower’s observation deck – 1,300 feet in the sky – will soon go on the market as the Port Authority launches a search for an operator.

With views stretching more than 50 miles, the glass enclosed deck on the 102nd floor is expected to become a major tourist attraction when it opens in 2011.

Officials will first issue a request for qualifications from potential operators. The firms that pass muster will be able to file detailed proposals later this year.

“We have begun our planning now for what will be at the very top of the building, knowing that it will once again become a world-class place that will be part of the New York experience for millions of tourists,” said PA executive director Anthony Shorris.